import java.util.*;
public class Example4_11 {
 public static void main (String args[] ) {
  Scanner scanner=new Scanner(System.in);
   int []a={12,34,9,23,45,6,45,90,123,19,34};
   Arrays.sort(a);
   System.out.println(Arrays.toString(a));
   System.out.println("输入整数，程序哦按段改整数是否在数组中:");
   int number= scanner.nextInt();
   int index=Arrays.binarySearch(a,number);
  if(index>0)
   System.out.println(number+"和数组中索引为"+index+"的元素值相同");
 else
  System.out.println(number+"不与数组中任何元素值相同");
}
}

